Maruzen and TM will have the markings "ASGK" somewhere on the body. Basically denoting "Airsoft Gun Kei" or "Japanese spec"/follow Japanese laws and stuff (Mainly 1 Joule velocity, and other minor side requirements). Not sure about the Classic Army since those are from HK.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE